Luis Chamberlain sent out the modules changes today for the Linux 6.6 merge window. Most notable with the modules update is a change that better builds up the defenses against NVIDIA’s proprietary kernel driver from using GPL-only symbols. Or in other words, bits that only true open-source drivers should be utilizing and not proprietary kernel drivers like NVIDIA’s default Linux driver in respecting the original kernel code author’s intent.
Back in 2020 when the original defense was added, NVIDIA recommended avoiding the Linux 5.9 for the time being. They ended up having a supported driver several weeks later. It will be interesting to see this time how long Linux 6.6+ thwarts their kernel driver.
So we can add “use an older kernel” and “use a modified kernel with that protection removed” to the list of options.
Using an older kernel isn’t a long-term solution. And according to the kernel devs, either using and older kernel in that way or modifying the kernel to remove these protections still violates the license even if it bypasses the technical protections.
(I’m guessing Nvidia will keep shimming and rely on either not being sued or winning the lawsuit.)
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